8218628: Add detailed message to NullPointerException describing what is null.
Summary: This is the implementation of JEP 358: Helpful NullPointerExceptions.
Reviewed-by: coleenp, clanger, rschmelter, rriggs, forax, mr
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GENSRC_EXCEPTIONS :=
GENSRC_EXCEPTIONS_DST := $(SUPPORT_OUTPUTDIR)/gensrc/java.base/java/nio
GENSRC_EXCEPTIONS_SRC := $(TOPDIR)/src/java.base/share/classes/java/nio
GENSRC_EXCEPTIONS_CMD := $(TOPDIR)/make/scripts/genExceptions.sh
GENSRC_EXCEPTIONS_SRC_DIRS := . charset channels
$(GENSRC_EXCEPTIONS_DST)/_the.%.marker: $(GENSRC_EXCEPTIONS_SRC)/%/exceptions \
$(GENSRC_EXCEPTIONS_CMD)
$(call LogInfo, Generating exceptions java.nio $*)
$(call MakeDir, $(@D)/$*)
SCRIPTS="$(TOPDIR)/make/scripts" NAWK="$(NAWK)" SH="$(SH)" $(SH) \
$(GENSRC_EXCEPTIONS_CMD) $< $(@D)/$* $(LOG_DEBUG)
$(TOUCH) $@
GENSRC_EXCEPTIONS += $(foreach D,$(GENSRC_EXCEPTIONS_SRC_DIRS),$(GENSRC_EXCEPTIONS_DST)/_the.$(D).marker)
GENSRC_JAVA_BASE += $(GENSRC_EXCEPTIONS)
$(GENSRC_EXCEPTIONS): $(BUILD_TOOLS_JDK)